How Do I Install Windows 7 on an External Hard Drive Without Formatting?

Can I install Windows 7 without formatting hard drive?

So, we can install/ reinstall Windows 7, 8, 8.1, 10 operating system even without erasing or formatting Windows drive. In order to do this, a plenty of free space required to accommodate the new installation. … Once the Windows installation/ re-installation gets done, users can open the Windows.

How can I make my external hard drive bootable without formatting?

Second step – Make your Windows USB drive bootable

1. List disk. After Diskpart started, type “list disk” command and click “Enter”. …
2. Select disk [ your disk index ] Type “select disk [ your disk index ]” in command line and click “Enter”. …
3. Select partition 1. …
4. Active. …
5. Exit.